Calculating-machine.



No. 628,273. Patented .Iuly 4, |899. J MALLMANN CALCULATING MACHINE.

App! t med Apr. 4, 189e.;

8 Sheels-Shxzet I.

(No Model.)

(No Model.)

J. MALLMANN.

CALGULATING MACHINE.

(Appumzion med Apr. 4, laos.)

Patented luly 4. |899.

6 Shanks-Sheet 2 Patented luly 4, |899.

J. MALLMANN.

CALCULATING MACHINE.

[Application led Apr. 4, 1898.)

6 Sheets-Sheet ElA (N0 Model.

(No Model.)

Patented luly 4, |899.

J. MALLMANN.

CALCULATING MACHINE.

' (Appliton led Avr. 4. 1898.)

s 'sheen-sheet 4.

No. 628,273. Patented my 4, 1899.

- J. MALLMANN.

CALCULATING MACHINE.Y

' (Application lod Apr. 4, 189B.)

fue Model.) 6 Sheets- Sheet 5.

m u1 x v 1| f; 75

l I a i D77 Patentod luly 4, |899. .ln-MALLMANN.

CALCULATING MACHINE.

(Application Med Apr. 4, 1896.!

6 Sheets-Shea( 6.

(No Mode.|.\

0 o -in w h .Uwx fall! hl. liMahHllHHllllllNlll IJI' l Ih. Ml/I I. mf A WU -I W l T v 3 UNITED STATES- PATENT OFFICE.

miras MALLMANN, or suEBoYGAN, WISCONSIN.-

OAL-cuLAT]reci-linenma.

slisczFIcATIoN-roming partei Letters meent No. 628,271'3, dated July 4, ieee. Y Appunti@ n4 April 4,1898. Serin no. 676.292. nn man.;

fargli. whom. iff nmy'mncertt: k

Beitknownthat I, JAMES MALLMA'NX, of Sheboygan, in ,the'pounty of Sheboygan and `State of Wisco'nsimhave'invented a new and useful Im provernentin Calculating-Machines,- of which the following is a description, ref-` crence'beig'had to the accompanying' drawings,' whi'ch are`a part of this specification.

My invention has relation to improvements xo incalciilating-machines. Y A

i The primary Aobject had in view is to provide a calculating-machine capable of addlinggsubtracting, multiplying, dividing, and accomplishing other arithmeticalproblems within its rangein a simple andvexpeditous manner, the machine being of an exceedingly l simple construction for` machines of this char: actor, owing to the numbenof its working parts being I"`ed\1c e 1'tov the minimum, and zo hence capable cfg-being manufactured and sold at comparatively low price.

-A further object contemplated is the provision offa simple type-writing attachment capable-of printing the diiferenn figures i'n columns as thev keys of diternt denomina# tions are operated.

Au object incidental in' the printing attachment is the employment of bmeans for throwing said printing attachment out of operative ,position `when calculations are being made other .With the `abeve primary objects in view thel invention' consists of the devices and parts or theirequivalents, as hereinafter more fully set forth. i

In the accompanyingdrawings, Figure 1 is a plan view of the-complete machine. Fig. 2 is a side elevation with the side piece 1femoved. Fig. l3 is a longitudinal sect-ion through-the center of the machine. Fig-4 is a plan view of a. fragment of the machine on a plane below the quotient-wheels, parts being removed. Fig. 5 is a front elevation of Vthe calculating Iand quotient wheels, )arts being removed and parts insection in o'r er to clearly disclose the. means .for turning 'said lwheels back to zero. Fig. 6 is a. side eleva- .tion of one of the calculating-wheels and al- 5o lied parts. Fig. 7 is a view f one of the calculating-wheels, looking on the opposite'sidc to -that shown in Fig.4 (i. and showing. the

than simple addition or subtrac means for carrying forward the ainounts. Fig.f8 is a detail fragmentary' viexv of oneof the guide-bars. Fig. 9 is adetailfragmentary view` of the push-bar which 'rotates the papercarrying roll.. Fig.`10 is an edge view of one of the.type.bars. Fig. 11 is .a side elevation ofa modified form of printing device,y and Fig. 12 is a.plan;view of Fig.1 1. A Referring to the drawings, the numeral 13 indicates the casingofthemachinc in which most of the parts'I of my invention are ,inclosed. The top of the casinggs` provided with i series'of liue'sofopen'ings .through which keys 14 pass. n The uppeuends of these keys are formed. er fproviddvith headthe keys ifvilll be 'arranged in a series of longitudinal lines running lengthwise of the top of the casing. l

pieces or buttons o'n -whieh:v.re de'Signatednumbers. The openings aresodisposed that 1 'l he heads or buttons at the upper ends ot the keys of each'longitudinal line are numbered from '"0 to, "9, the key having the 0 designation thereon being ad-v visably the key nearest the from; end of the machine and the keys of each longitudinal line being numbered consecutively from the 0 key to the key at the rear end of the machine. .All the keys, with the exception of ,the 0 keys, are formed at' their inner r lower ends with beveled edges 1 5, the bevel gradually increasingr from the 1 vkey of a line to the terminal or 9 key ot' a line.

Above the bottom piece ofthe casing are arranged a series of fixed guide-bars 16, which are supported by means of .transverse cross-'f pieces 17, extending upwardly from the bottom. One of these' bars 16 is provided' for each longitudinal line of keys, and said bars are so located as to be immediately in line with the iowerends of the'keys o f the several lines. through, which slots correspond in n`u mberto the number of keys in each line. The slots of cach bar are progressively lengthened from the front toward the rearot thclnachine, and the slots of the Severabars are of the same length with respect to eachother.

Below each guide-bar 'is a. longitudinallymovable arm lil, each arm preferably consist` ing ot' two parallel bars, which are connected by a 'series of transverse pins '20, and said bars have journaied therebetvrelnglI series e'f Each bar has a series of slots 1S thereautifrictionrollers 2 l,mounted on other transou, so as to impart to said arms alongitudinal movement. -The frontend of each'lngitu- `dinal arm visz formed withan upwardly-projecting extension, tozwhich is pivoted an arm 22, said arm provided on'its-uuder edge with a series of teeth23, nine-atleast of said teeth being provided to correspond to the digits 1 to f of the keys. The pivoted toothed arm is held in a-'normal Aposition by means of a coiled spring 23'. Eachv longitudinally-movable arm 19 has secu red thereto one end of. a coiled spring 24,A said spring adapted to retrieve the arm after pressure on a key has "been removedand the key returned to its normal position.

Arranged within the casing a suitable distance above the guide-bars .16 are a series of type-bar-operating arms 25, said arms being supported by suitable cross-pieces 26. One

of these type-bar-operatng arms isprovided for each Alongitudinal line of keys, and each bar is provided witha series of slots 27, the rear edges of said slots being preferably beveled. The keys pass th rough theseslots and also through registering openings in the crosspieces 25. The forward end of each arm 25 is formed with a beveled or cam surface 28. 'lhe rear edge of each key, at a suitable distance above the type-bar-operating armsJ is formed or provided with a projecting beveled =lug or cam 29, which when a key is depressed is adapted to `register with and engage the beveled rear edge of its slot 27, and thereby cause a rearwardmovement of the type-baroperating arm. The upper portion of. each key is encircled by a coiled spring 30, which is confined between .the under side of thev head portion or bntton of the key and a crosspiece 3l within the casing. .These springs serve to retrieve the keys afterA finger-pressure thereon is removed.

Journaled in the sides of a front extension to the casing is a shaft 32, which shaft carries Aa series of calculating-wheels 33, there being one of -said calculating-wheels employed for each longitudinal line of keys. Adjacent to and rigid with one side face of each calculatin g-wheel is a ratchet-wheel 34. Each-of these rachet-wheels is adapted to'be engaged by the teeth of the pivoted arms 22. Each ratchetwheel is also engaged by a spring-pressed pawl 85 to prevent backward rotation of -the ratchet wheel and calculating wheel. In

order to prevent the ratchetwheel from rotating toofar or beyond the desired point by the impetus given thereto by the engagement therewithof the teeth of the arms 22, I provide-,5in connection with each' calculatingwheel'aud allied mechanisme. lever 36. Each.

lever is pivoted medially at the upper end of a standard 37. The en d of the forward arm of each of these levers is immediately ftbove the pivoted toothed arm 22, and the cmd of the rear arm of said lever is bent downwardly and Abears on lthe edge of the arm 2 5 normally at the base of the camsurface 28. -By this'V construction after one of the longitudinallymovable arms 19 has been inoved forwardly by the actuation of one of' the keys and the ratchet-wheel and the calculatingwheel have y been thereby rotated a certai'n'distance the arm 25, by the manipulation of the same'key,

will by this timehave been movedrearwardly asu icientdistance to cause the cam 28 to act on the ownwardly-bent end of the lever 36, and the by cause said lever to be turnedon its pivo so as-to throw the forward arm-of the'lever downwardly,'-and thereby bring itsv end in firm engagement with the upper edge of the arm 22, aud thus hold the teeth'of said Aarm in rmengagement with the teeth of the ratchet-lwheel, and thereby prevent more thanA the req'iired rotation of said ratchet-wheel.

Each c lculating-wheel, with-the exception of thetirst one of the se'ries, has also in connectioutherewith mechanism for. transferring amounts over from one wheel to.the next wheel of the'series This-mechfnism will Ynow be explained. Secured rigidly by means of bolts 38 to the upward extension of all the arms 19 with vthe exceptionof the first arm 19 of the series are -arms 39, said arms provided at their outer ends with inclined lugs 40.

.Pivoted to lugs extending np from the bottom of the casing are bars 4l', one of said bars being provided for each calculating-wheel with the exception of the initial calculating-wheel. One side of each of thesebars at a medial point is provided with an outstanding lug orv To the upperend of each bar projection 42. 41 is pivoted a dog 43. .To the dog 43 is counected a. link 44, and-t9 the opposite endofl said link is connected a coiled spring 45; said. coiled spring being alsoconnected at its other end to a fixed part'. Mounted on the shaft 32, on the side of each calculatinglwheel opposite to the side against which the ratchetkwheels 34 arearranged, are cam-wheels 46, said cam wheels being each provided-with a plurality IOC of projecting cam-surfaces. The lugs 42 of the bars 41 stand out a sufficient distance laterally fromthe bars4l to be engaged by the cam-surfaces. of thecain-wheels'46, as shown most clearlyiu Fig.;7 of the drawings. This completes a description' of the .parts adapted for carrying over the amounts from one wheel to the other, and the operation thereof will be fully pointed -ont in ,the de-` scription of the operation of tle machine in its entirety, which will follow hereinafter.

Each calculating-wheel is provided circnmferent-ially with two series of numbers, the numbers of each series running from to 9 and being duplicated three timcsin each circle on each wheel, so that in each circle of gures aroundthe peripheries of the' wheels thirty numbersappear. There are also thirty` teeth on the ratchet-wheels 34. This arrangement, however, ismot at all necessary, and if calculat-in gwheels'l of smaller diameter were 'lused-the series of numbers running from 0 to Qanxight be merely duplicated in each `eircl, or, in` faet, the numbers 0 to 9 might ,extehdentirely around the circumferv ence of theyrheel, and in-eithe'rcase the numister with the sight-openings through which the numbers on the calculating-wheels which run in one direction are visible or. in register with :the openingsthrough which the numbers on the calculating-wheels running in the reverse direction are visible.

The shaft 32of the' calculating-wheel is provided upon one end with a finger-piece 49 andl near its opposite' end, within the casing, is provided with -a projectingpinO, which is engaged bythe fre end of a spring 51. The shaft has also project-ing therefrom at certain distances apart throughout its length other pins 52, and the hubs lof the calculating'- wheels 'have projecting therefrom 'pins 53, which are on a plane at'right angles to the pins 52. vThe vpurpose o f this construction is to provide for rotating the calculating-wheels back tosuch position that the 0 mark on all thewvhcelswill appear through the sightopenings, *In order to accomplish this, the finger-piece 49 is grasped and the shaft 32 pulled outwardly against the action of the spring 5 1. position that its-pins 52 will-when the shaft is rotated engage the pins 53 of the calculating-wheels. The rotation of the shaft is then continued until the wheels have heen rotated the desired distance to display 0. It is obvious, however, that before the operation just described can be accomplished it is necessary that the ends of the d ogs 43 be thrown outof engagement with the ratchet-wheels 84. This is accomplished by thefollowing construe` tion: Each ofv the longitudinally -niovable trms 19 is formed with a depending-pin 54. Passing beneath and transversely of the series of longitndirinlly-movable armsv is an actuating-arm 55, said arm provided with a series of inclined cuts or cams 56, there being one of said inelines nr cams provided for cach This will bring the shaft to such depending pin. The actuating-barhasshort 'elongated slots through it near opposite ends thereof, and through these slots pins pass, .and thereby limit the extent of the movement of 'the actuating-bar in Athe direction 'ofiits length. Fig.l4 shows-the normal position of the actuating-bar, wherein the pins 5t are adjacent to the'shoulders orangles of the inclined cuts. .When it is desired to 4turn the shaft 32 in the manner previously referredto for the purpose of turning all the calculatingwheels back: to 0, the actuating-rod is first pushedinwardlyto the extent of its movementf This will cause the inclined encam pins, and thereby-- move the longitudinallymovable arms forward, and consequently the -pivoted toothedarms 2:? and alsothe arm,39,

in the same direction. As the ar'fxnsv39 are thus moved'ithe. projecting lugs 40 thereof are moved away from the dogs 43.v The aetuating-a'rm`55, is held inwardly .by onefinger of one hand, while with the othrhand the shaft 32 is?, turned in the manner pre-` vionsly pointed out. As the projecting lugs .surfaces thereof to act against the depending 40 no longer offer any obstruction to the up. I

movement offthedogs 43, said dogs and the.

toothed p ivoted arms 22 as the shaft'3'2 and the ratchet-wheelscarried thereon are rotated 1 are forced upwardly by the teeth of the ratchet. I

wheels, and hence saidvratchet-wheels are lpermitted to be rotated so that 0 will ap-v pear at each sight-opening. After this is accomplishedl the finger pressure on the ac- ICO tuating-barw55 lis removed, when of course `said bar is automatically returned to its .nor- Y mal position by means of the longitudinallyf movable arms 19, which arms are moved rearwrdly after having performed their function by the action of the springs 24.

Referring to the printing mechanism, -the numeral 57 indicates a paper-cylinderof the i usual and well-known form. vExtending npwardly from the bottom of the. casing are uprights, and to the upper endsof these -z uprights are hinged shorter uprights 59,whieh;

form bearings'for the shaft or axis U0 of the,

paper-cylinder. The short standards 'are so 'hinged as to dbe'thrown rearwardly when rcleased, so that the paper-cylinder may he*4v turned out ofoperativc position for printing.

The short uprights are heldreleasably in npright position by any desired means-such,

for instance, as `b y spring-arms 51,whit-h arms are provided with projecting shoulders, said vshoulders adapted to engage other shoulders G2 at the lower ends of the uprights. hese spring-arms arel preferably provided with in-l provided with a lmilled head 63 for coivenicnce in turning the shaft and its cylinder in order to properly adjust the paper to be printed onto the cylinder. Pivoted to the uprights 59 are short-arms (i4, the front ends of said arms being extended beyond the' edges of the uprights. Journaled between these arms is a roller G5, the trunnions of said roller projecting into the ends of the arms. The under-edge of each short arm has bearing thereagainst a spring G6, which causes the forward ends of the arms to be thrown upwardlyin orderto bring'the roller yieldingly in contact with the surface of the paper-cylv nder', whereby the paper when adjusted to said cylinder is held firmly to the surface thereof, so t-hatwhen thecylinder is rotated the paperis moved therewith., Each arm 64 is also formed or provided with curved fingers 67, adjacent to the surface ofthe cylinder, and forming guides for guiding the paperaround the cylinder as said cylinder'is rotated The numerals 68 GS indicate llaterally-extending angnlar arms, which at their ends are provided -with upwardly-extending spindles G9 69, on which are revolubly mounted rolls 70 70. A printing-ribbon 'il extends from one roll 7d to thc other and is adapted to be unwound from one roll and wound'np on the other. This ribbon extends'lengthwise of the cylinder and adjacent to the surface of said cylinder against which the type-bars strike.

Mounted on the shaftv or axis of the paper-cylinder, nearonc end of said shaft or axis, is a ratchet-wheel 72.

Each longitudinally-movable arm 10 has connected toits rear end a plate 73, provided with a curved slot 74. :The numerals in'- dicatea seriesof rockingr levers, one being provided for each plate 73. 'lhese levers are pivoted medially to the upper ends of uprights 76. A screw orpin passes through the curved slot vof each plate73 and engages theV forward end of each iocking lever. To the rear end of each rocking lever is connected thelower end of`a type-bar 77; there being one of said typebars for each longitudinally# movable arm and` being actuated by each of said longitudinallymovable arms in the manner just described. Each` type-bar is 'provided at its upper end, upoh its rear edge, with a series of characters-thc character-'s in the present application of thedevice being the numbers 0" to 9, 0. startinilg,r at the upper end of the bar and vthe other numbers` followingr downwardly in regular sequence.

'lo the rear-end of the type-bar-operat-ing arms are con uected -links 78, the opposite ends of said links being conuectcdto the type-bars', and said links forming with the rocking levers 75 a series of parallelograms.

Arranged along one side of audwithin theA casing and parallel with `the first linefof keys is a` push-bar 75l, said har. being provided a'long one edge atdistances apart correspondingto the distance between the keys vwith a series of recesses S0. The operating-keys .14

have also projecting from their lear edges beveled surfaces S1, which wheirthe keys are `to one ehdof a coiled spring S2.

vdepressed are adapted to engage the recesses which are adaptedA to engage the ratchetwheel 72. y The operation-of my machine for the purpose of adding numbeis will now be explained.`

Before operating the plate48 should be 'slid toward the right of Fig 1, so 'as te bring its sight-openings into register with those sightopenings 47 of the casing through which'the first circle of numbers on the calculating-l wheels are visible.4 -If` the'vwheels-are not turned so as to make Q on each one visible, the shaft zshould be turned in the manner hercinbefore pointcdvout until each wheel is in position to bringitsfO character to view.

Now it will be supposed that it isdesired' to add the following'numbers: 614, 25,v and 1,S90. In the fiist place key 6 of the third column is depressed. The beveled surface 15 of this key will pass through the appropriate slot of its guide-bar 16 and then act on the antifriction-roller 21 below of the ap propriate longitudinally-movable arm 19. It will be understood that the beveledsurface 15 of each key is so proportioned that it will move itslongitudinally-movable bar just the required distance tocause the pivoted-toothed arm 22 to turn the ratchet-wheel 34 a sutilcient.dis tance to cause the appropriate callculating-wheel to turn jst the proper distance to disclose the number indicated on the particular key,` in this instance the number IOO G. It will be noticed that the upper-end of each bevel l5 terminates in an abrupt straight -shoulder 85.

Just before a key completes its full down movement, therefore, this 'abrupt shoulder enters the slot of the guide-bar 1G, ahd hence there is no further forward move-4 ment of the longitudinally-movable bar. At this time thesmall beveled lug 29 at a medial point of the key comes into action and enters the slot 27 of the t'ype-bar-operating arm 25,

an'd hence forces said arm teward the rear of the machine. 'lhis will cause the cam-surface 28 of said arm fonct on the lever 3G in the manner hereinbefore pointed ont, so as to cause the forward end of said lever to bear on the pivoted toothed' arm 22, and thereby prevent the ratchetwvheel 34 from rotating beyond the desired point. The nextoperation in the example given 's to depress key 1 'of the second column and then key 4 of the ist column. In each instance the same operation of parts occurs, as justdescribed, and the wheels will show G14. The next operation istodeprcss kcyt? of second column.

This will causer-ue calculating-wheel of this v column to more the distance of two more numbers, and as thcuumbcr 1 was'bclore visible through the sight-openings the uumvber 3 of thiscalenlating-wheel will now bc play the number 1 ofthe calculating-wheel relating toiourth column; ),Next key S of third column 'is'depressed 'As the'ca!c ulat ing-wheel bf" the third elumn before disclosed 6 the wheel will be rotatedrsnch-a distance as to pass by the number 9 of this series or'numbers'of the circle and be'brought. to 4 of the succeeding seriesxof numbers of-the circle, and thereby disclose 4 to view. In thus passing bythe first series of numbers, lio\vever,aud in leaving thenumber 9"'of said first series the cani-wheel 46 relating to' this calculatingwvheel'will have been rotated sufiiciently far to bring .the highest point of the cam-snrfaceagainst'the projecting lug of the bar 41,'and` hence turn said Vbar on its pivot anddrawing back thedog 43. \Vith the continued rotation of the calculating-L wheel and the cam-wheehand as thegnumber 9 of this series of,A numbers of the circle leaves the sight-opening, the highest point of the cam-surface; leaves the projecting lng of the bai' 4l,'and said projecting'lug falls into engagement with the lowest point of the next" Cain-su rfaele, thus permitting the bar 41 to return toits normal position, and in so returningto cause the dog 43 thereof to engage vf, th the ratchet-wheel 34 ot' the next succeeding calculating-wheelgor the calculating-wheel of the fourth column, turning said wheel the disthrough the sight-openings.

tion is to depress key 9 of the second 001m tance of one number. The vinclined lng 40 prevents overrotation. of this succeeding ratchet-wheel, inasmuch as the end-of the' pawl on'its ,foi-ward thrust -comes beneath this lug, and hencesaid lugholds the pawl -irmly in engagement with the teethrotA .the

ratchet-wheel, thereby preventing'overrotation ofsaid ratchet-wheel by its'ow'ngmomontum. inasmuch as the number lriwas previously to view in' said fourth column, number 2 will now be brought to vie'w- The next operaumn. As the number 3 was before visible'- in said second column the calculating-wheel pertaining 'thereto will pass hythenumber; 97 of this particular series ofk numbers onthe wheel and disclos'e figure i122?? ofy thenexm series of this circle of numbers,`andin .pass ing by the 9 thenextsucceedingcalculat ing-wheel, or the: calculating-wheel olfthethird eolumn will be'operated the distance of one number in vexactly t-lie same manner as previously pointed out. .As the calculating-l wheel for said third column previously dis wheels will therefore show through the sight- 'upeuings'thc uumber""l,539," which is the sum total of thc vthree numbers added togctlu-r. l

\\'hcn my machine is thus usedfor the operation of adding, it atvthc same i-nig simultancously prints the numbers in' columns. As the keys are depressed in the manner just described and the longitudinally movable arms 19 are forced forwardly, the movement nf the plate 73, carried at the 'rear end et erich lougitndnally-movable arr'n, will cause the pin in the end of the rocking lever to ride iu the curved .slot 74,an'd thus turn said rocking lever vand elevate the type-bar 77. When each key has hren depressed to such an extent asl tol bring the square shoulder thereof into engagement with the appropriate slot of the guidebar 16 and the .forward movement of the longitudinally-movable arm 19 is thus stopped, thebeveled lng 29 willY then-be acting avainst'th'e inclined rear bordering edge of tile appropriate slot 27 in the type-bar-operating arm 25, and thereby cause a rearward movementof said type-bar-operating'arm,aud consequently such action against the link 78 as to cause' the type-bar toA be thrown rearwardly, vso as to 'cause the appropriatetype tostrike against the inking-ribbon 7l-and .force saidiukinglribbon against the paper to be printed upon. It'will.be understoodvlhat the keys are-soregla-ted that the longitudinal movementof the arms 19 is just suicient to cause the raising of the t'ypebar such a height asto bring the proper type'into such position with relation to the paper-cylinder as to print the particular number represented by the key onto the paper, In the example previously given it will be obvious tirati-614 will be first printed, and immediately upon depressing the last key.4, which is-a key of the iirst column, the beveled surface 81 of said key will act on the push-bar "79, so'as to cause a. turning-of the mediallypivoted lever 834and a pulling forward of the toothed arm 84. W'hen pressure on the key is removed, the coiled spring S2 vwill return the push-bar 79 to itsnormal position, and in thus turning the sarn'e'cause the toothed arm 84 to be'throw'n rearwardly, the teeth of said arm engagingthe ratchet-wheel 72, and thereby moving the paper-cylinder 57 the required Ydistance rotatively to bring the paper in position'for the next line of figures. After the Jdierent numbers are thus printed in a col- Yumn the sum total is shown on the registerclosed 4 it will now disclose 5.7 The beneath said number the number tobe'snbwill be 984, which will be disclosedfthrough :is in the operation of adding.

. above the left-hand circle of numbers aroundv over from one caleulating-wheelto the other 6 5 front end of cach type-baroperatiug arln 25 sired to subtract 167,002.fro.m 623,914 the operation is as follows: First set the nutntraeled. The remainder is printed in the same manner as explained in regard to printing the total in the operation of addition. This printing, mechanism is not adapt d for the operations of multiplying and divi ing, as will be readily understood from theexplanation of these operations, and hence when the machine is employed for suchpurposesl the printing mechanism is ,thrown vout. of operative position by pulling the spring-arm lilout of engagement with the shoulders 62 ol4 the short uprights 59. Said uprights are then i free ,to be thrown rearwardly on their-.hinges and to carry the papercylinder and allied parts in the same direction. The operation of multiplying will now be explained. In Vthis operation the'sam'etsighb openings and the-same circles o f figures on the calculating-wheels are employed as in theoperation of adding, all the calculating-wheels, in the first place, being set Ato 0. It willbe supposed that it is desired tomultiply 82 by 12.. Itis necessaryto first press key2 ofthe first column twice, then key 8 of second column twice, then key 2 of secondicolumn once,v and key 8 of third column once'. The result the registeringsightopenings.- Thecarrying over from one alculating-wheel to the other is aecomplishe i exactlyiu the same manner In subtracting the sliding plate 48 is slid to the left of Fig. 1, s o as to bring the sightopenings thereof into register with the sightopenings of the casing which are immediately the calculatihg-wheel or the circles of numbers which run in inverse direction,a.ud which numbers will be designated as the negative numbers. It will be supposed that if itis deber to be subtracted from-in this example 623,914. l Next depress keylfbf sixth col'- umn, key G of fifth column, key# of fourth column, and key 2 of first coluuiu. The result is 456,912- 1- In subtracting, when the'rotation iscarl'ied.`

insteadof the succeeding calculating-wheel disclosing one number greater it discloses one number less, in view of the inverse arrangementof the negative numbers. A

In the operation of dividing it is necessary to employ an extra series of wheels for displaying the quotient,and-whichwheels I herein designate as quotient-wheelsand indicate the same by the numerals 86. These wheels are arranged in a .portion of the casing above the lower calculating-wheels and are mounted on a shaft 87. Each wheel has a series of Vnu mbers around its periphery run ning from 0to f 0. Rigid with each quotient-wheel is a ratchet-wheel 88, and rigid with each ratchet-heel is a. disk 89. The

im, und lo the upper. extremity ofeach arm said pawls being in engagement with leach ratchet-wheel 8S. One end of n coiled spring 92 is connected to tire pawland, the opposite extending beveled lug 93. On the top of the with elongatedslots 95,.through which se'tf extend through openings intothe casing and are provided with beveled surfaces 97, which surfaces are immediately above the beveled ventsbackward rotationof -said wheels. In the operationof the quotient-wheelswheu it should rbtatethe'anglearms tl-lpare pulled outwardly, and when a key `is depressed the beveled lng '29 of said key will act. ou the type-baroperating arm 25 and cause the arm 90 and thepawl carriedithereby to be moved forwardly, and thus rotate the ratchet-wheel the desired distance tp display the lnum-T the key depressed,'whic h number 4is visible through the sightfopeniugs 90. When, however, it-is desired thatauy oneor more of the quotient-wheels should not be rotated, Othe thel beveled isurface QYrthei-eofto engage' tho beveled lug 93 ofgthc pawl, andthus raisethe -teeth of saidpawl out of engagement with theteeth of the. ratchet-wheel. obvious that when the bar 25 is pushed forwardly the .particular quotient-wheel will not berotated.

In explanation number84i1 by435.A The quotient-wheels are Iirst s et so that noue 'of said wheels will be operated.' Th'e dividend is `then displayed hand circle of numbers on the calculating wheel. Thedivisor being (65, jt is first requisite todivide this numberfinto the first said numbers being 84. 65,'"the divisor, is therefore struck once by pressing-key 5 of the second ,column and key 6 o f the third column. A Beforedoiug this, however, the quopablo of rotatingby pulling out the'angle -A arm 94 pertaining thereto, so 'that the teeth of the pawl 9'1- will be in engagement'with tho ratchet-wheel. The operation thus far will the second column. arm'pertainjng tothe quotient-wheel' of the first coluxu riso' that said quotient-wheel may be operated,`und strike the divisor 65 byV pressing key 5 of first columnand key 6 of.

is provided withgail Yupwardly-cxtcnding arm second column, repeatingas oltnnuntil the'.I

ber on the quotient-wheel.corresponding tol angle-arm is pushed ihwardly, so as to causo.

tiet-wheel=of the second'feolnmn is made ca- 90 is pivoted a pawl fll, the teeth of one of end of said spring -tothe armiihfA 'lheinncr eudof. each pawl is formed with an upwardlycasing, above the quotient-wheels, are aseries v angle-arms 94, whicharms are provided V screws 96 pass. The innerends of these arms -lugs '93 of the pawls 91. A spring-pressed .dog 9S engages the ratchet-wheels 88 and preis desired that any one or moreof said wheels Y It is therefore les f lof dividing numbers it will be supposed that it is desired to divide the through the negative openings of the calcu latingwheels orthe numbers of the leftnumbers of thedividend'whfichwill contain it, f i

show' the ligure I in the quotient place of A Now pull out the anglo- ,negative openingsfof 'the calculating-wheels shovwa lesser number than the divisor'. In this example, therefore, the key 5 of"'{irst column' and `key 6 of secondcolumn uill be.

struck twice, inasmuch as after striking said keys twice the negative .openings will show 61Vv as the' remainder. which of course is less than thedivisor; The quotient-wheel of the -irst column will also show 2," owing to ro key5of-'said first column having been depressed twice.-4 The quotient will 'therefore be '12," fwith a' remainder of 61, making the answer` 12%. The. quotient-\\'hee'ls are also provided with means '.for turning x5them back to 0, similarV to the means-em ployed for' tnrn'lng'tlie 'calculating wheel, andfgconsistng' `ol? p'ins100, extending from the shaft 87, and "pins Lat right 'angles thereto, extendingfrom the'quoticn t-.wheelst zo At oneend Vthe shaf t is provided'with a milled head for convenience in pulling the same outwardlyg'andnearifs oppositeend, within the casing, is provided with a projecting pin 102, against which' bearsa spring-arm' 103.

On'.Sheet 6 of the drawings I show-a moditied form 'ofprinting arrangement.' per-cylinder 57 ismo'unted inthe same'manner as in the other form of construction, and I also employ the rocking lever 75-and the- 3o plates'73 at theends of the longitudinallymovable'arl'ns 1.9. )Instead, however, of arrangingthe type on atype-bar I arrange said type on a' wheel 104, mounted on ashort shaft 105, carried. atthe upper end of. a pivbted bearing' 106;' On the 'same Aand fast to the typewheel a gear-.wheel 107. .'lo the rear end of the rocking le'ver 75 is connected the lower end of a rack-bar'lORthe teeth of which are .adapted to engage with '4a the gear-wheel 107. .v coiledv spring -109 has one end connected to the rack-bar and its other. end connected to therocking lever 75. Each arm 25 is connected to. the piv-- otcd bearing 106 by means of a link-110.A In

operation of this form of type-writing attachmcnt'fwhen a key Ais 'depressed' and the beveled portion 15 thereof acts upon the longitudinally-'movable arm 10 andifmoves 'said arm forwardly therocking levr\75, through 5o its connection with the slot `74.11 the plate 73, is caused toA turn on its pivot and move the rack-bar upwardly .the requisite, distance to rotate the lgear-wheel 107 the propc'idistance to bringthe number on the type-wheel which correspondsto the number designating the key in proper position for printing Qn the paper carried by the printing-cylinder 57. 'When the number is thusA brought around to pesiton, the beveled lug 29 '\vill= act on the arm 6 .25 and cause the pivoted bearinglOG to be swung rearwardly on its pivot and forcethe type against'the inking-ribbon and cause the imprint to be made on-the paper around 'the cylinder;v The rubber-108. is also necessarily carried .rearward against the action of the coiled spring 109, and after pressure on the key is removed and said kcy returns to f AThe' prishaftzis mounted.

its `n`ortnal position, so as toreleaso'thc be\. eled 'lng 29 from engagement with the slot of arm 25', the recoil of spring 100e-ill return the rack-bar 10S toits normal position. and said rack-bar in turn will force the pisoted bearing.106 and the type-wheel and other parts carried thereby back to their normal upright position. It will ofcourse 'be understood 75 .that for each'line of keys one of the type- A. vwheelsandallied mechanism is provided, each type-'wheel bei ng mounted onya'separate short shaft.

i. The combination, of a series of lines of keys, said'keys provided with bevels, the bevel of eachF successive key being greater than the. bevel of the preceding key, a fixed guide-`barfor each line of keys, 1each-of said -bars provided .with a series offslots in liuc with-` the keys, andeach successive slot hcinglonger thanpthe preceding slot, the slots adapted to accommodate the bevels 'of the keys, a longitudinal at'mfor each line of keys, 9c and. adapted to be acted upon by .the vbevels 'of the keys, as said keys are depressedand forced through' the' slots of the guide-baia, each arm adapted to be thereby movedA vary-V ingdistances by each keyofa line as a keyl is depressed, and'registering mechanism adaptedto be actuated by each-.longitudinal arm as xsaid arm Ais-acted upon by the'keys,'the dierentkeys causing different registrations f the registering mechanism. l v 2. The combination, nf a series of liues'of keys, said keys provided with beve-18,' the bevel of each successive keybeing greater than the bevelof the preceding key, a fixed guide-bar for each line of keys, each of' said. x'o5 bars provided with a series of. slots inline with .the keys, and each -successiveslot being longer than the preceding sl'ot,"tl1e slots adapted 'to'accommodate the'bevels of the keys,`a longitudinal arm foreach linerof keys, each 4ot said arms consisting' of r tu-o parallel bars having antifriction-f'rollers Vjournaled therebetween, said rollers adapted to be acted upon bythe bevels of the keys, as said keys gagement with the tee'th of the ratchet-wheel, whereby thegactuation -of each longitudinal arm will cause, through the movement of the toothed bar, as'certain rotation of theratehet-- wheel and theiudex`-wheel.therewith, a plvotcd lever, and means for turning said lever.

lare depressed and forced through the slots of r x54 pivoted to each longitudinal arm and in enlo i ' wheel fast on each inde .\'-wheel, a toothed har',

vented from being rotated beyond the proper point. 2 Y

.4. rihe combination, of a scriesof longit ndi- \`nal arms, means foractuating the same varyingdistanees, registering'mechanism consistng-of a series of index wheels, a ratchetpivoted to each longitudinal arm and engag ing the teeth of the ratchet-wheel, whereby the actuation of Veach longitudinal arm will r 5 cause, through the movement of the toothed bar, a eertainrot-ation of the ratchet-wheel and-thejindexwheel therewith, a mediallypivoted leger, a bar provided with an incline or cam, and means for moving said bar lonzo gitndinally whereby the cam is adapted to act on one end of the lever in order to throw its opposite endinto engagement with the toothed bar, at the instant said toothed bar moves theratchet-wheel the required distance,

i5 whereby said ratchet-'wheelis prevented from being overrotated beyond the proper point.v

5. In a calculating-machine, the combination, of a series of lines of keys, a bar for each line of keys, and adapted to be actuated as 3o each key is depressetheaeh of said bars provided with an incline or cam surface, a longitudinal arm'for each line of keys, each arm constructed to be actuated varying distances for each key of a line, registering mechanism consisting of a series of index wheels, a

ratchet-wheel f ast to each index-wheel, a toothed bar pivoted to each longitudinal arm, and having its teeth in engagement with the teeth of the ratchet-wheel, whereby the Aac- 4o tnation ofucach longitudinal arm will cause,

through the movement of the toothed bar, a certain rotation of the ratchet-wheel and the Y index-wheelltherewitlnandamedially-pivoted lever,one end thereof adapted to beacted upon bythe incline or-cam of eaclrlongitudinallyactuated vhbar, and when so acted upon, to thrivr the lopposite end of the lever into cn-' gagementivith the toothed bar at the instant said toothed bar moves the ratchet-wheel the 5o requiredzdlistance,whereby said ratchetwheel is prevented from being rotated beyond the proper point.

G.' 'lhe combination, of registering mechanism'consis'ting of a series of index-wheels, a ratchet-wheel rotatable with each indexwheel, a cam-wheel rotatable withveach index,- wheel, a pivoted bar, provided with a projecting lug adapted to ride along thc camsurface, and said b'ar adapted to be turned 6o oditspiyot when the projecting lug thereof reaches the highest point of the cam, and tof' rock in the opposite direction, when the' lug leaves the highest point of said cam, a pawl pivoted to the upper end of the pivotedb'ar,

'65 and adapted to engage the i'atchet-whee'l of the'sncceeding indes-wheeL-'when thellug of the p 'ivoted bar leaves the highest 'point of the caln-snrfmre, and thereby rotate said snc Aeeeding ratchet-wheel a certain distance, in

wheel amLeaxn-whecl for each inde.\'wheel` 4 and located,v respect i rely, upon opposite sides ot' each indexavheel, a series of longitudinallymovable arms, each arm formed or provided with an extension, said extension provided with a lug, a toothed b ar pivotcd to each longitudinal arm and adapted to engage each ratchet-wheel, a pivotcd bar provided with a projecting lng -adapted to engage the camwheel, a'pawl pivoted-to said bar, the act-ion of the cani-surface of the 'cam-wheel on the lug of the pi voted har causing,r the pawl ca rried by said bar to be moved the distance permittedby the lug of the extension of the'lon- .gitndinal arm, and thereby nl ovethe succeed- -ing ratchet-wheel the distance necessary to rotate the succeedi ng i ndex-wheel thedistance of one character, said lug of the extension of. the longitudinal arm thereby preventingoverrotation of the succeeding lratchet-wheel by holding the pawl firmly in engagement with the teeth of the ratchet-wheel.

8. The combination, of a. series of bars provided each with a depending pi, and. eachv having an extension therefromL-said iextension formed with a lug, a pivoted toothed bar, a shaft having lateral play, and having a series of pins radiating therefrom, index-wheels mounted on the shaft and having pins extending therefrom at-right angles to the pins of the shaft, ratchet-wheels mounted on the.

same shaft with the index\vlieels,saidratchet wheels being engaged by the pivoted toothed arms, a 'cam-wheel -for each index-wheel,a pivoted arm provided with a lug adapted to engage the cam-wheel, a pa'wl carried by the pivoted arm and adapted to engage the Alug -of the :extension of the longitudinal arnf,

whereby the pawl is prevented from overrotating the succeeding ratchet-wheel, and an operating-bar provided with a series of ca1nsurfaces-adapted to engage the pins of the longitudinal arms, as said bar is operated, whereby the longitudinal .arms are moved longitudinallyin order to bring the lugs of the extensions of thear'rns out of engagement with the pawls, whereby on the outpulling of the shaft said shaft can be turned `so as to bring its ins into engagement with the [uns of the in ex-wheelsf, and thereby rotate said 'indexwheels to a' common point.

fr. In a calculating-machine, the combination, of a series ofindex-wheels'each-having two sets or series of numbers, one set or series running in a reverse direction to the other,`

mi. `ns for actuating said wheels, a quotientwheel for each* index-wheelgand means for throwing cach qu'otientavhcel .into orout ot A operation, so as to be operated each time an index-wheel is operated'. 10. In a calculating-machine, the combination,'of a series of index-wheels cach having two seis or series of numbers, one set or sel ries running in reverse direction to thc other, means for actuating said wheels, a series of lquotient wheels, one quotient-wheel being provided for each index-wheel, a ratchetwheel for each quotienpwheel, a pivotcd pawl for each I.;umtient-wheel,l each pawl formed or provided with a lug, and a movable arm adapted to engage the lug so as to turn the pawl on its pivot, and thereby throw the same out of engagement with the ratchet-wheel.

11. Ina calculating-machine, the combinaf tion, of a series of lines of keys, a. bar for each line' of keys, and constructed to be actuated varying distances by each keyof a. line, calculating mechanism for each line of keys and operated by the bar for said line of keys,

each meehanism'operating an index-wheel, a type-writing attachment, a rocking lever for A each longitudinally-movable'arm and having one end working in .a curved slot formed in a plateextending from each longitudinal arm, and the opposite end of each rocking lever connected to the type-writing'atta'chment so as te Vbring the proper type .or character to printing position, and means for forcing said type or character against the paper to be printed upon. 12. In s. calculating-machine, the combina.-

tiou, of a series of keys, registering mechan-l ism adapted to be actuated 'thereby as'each key is depressed, standards projecting upwardly'from the base of the machine, other.

standards, hinged to the firstnamed standf arde, and normally held in upright position with relation thereto, a' paper-cylinder journaled in the last-mentioned standards, means for detaehabiy holding said last-named standards lin upright position, and for releasing i said standards so as to adapt said standards out of printing position, a. series of parts carrying characters, and a' connection between tanees as each keyis depressed, registering mechanism operated by the longitudinal arms,a paper-cylinder journaled in editable bearings, a series of type-bars for each longitudinal line of keys, -a series of rocking levers, each having one end connected to the end ofA the type-bar, and its opposite, oud working in acurved slot ofthe upwardly-projecting platen. push-bar also adapted to be operated as each key isdepressed, and a link connecting each push-ber with'each typebar.

14. In a cnlculati11g-machine,- the combna tion, of a series of keys, registering mechan ism adapted to be actuated as each key is depressed, a. rod adapted to be movedlongitudnallyas each key is depressed, a coiled spring connected at one end to one end pf the rod, and at its other end to a. xed point, a medially-pivoted lever having one end connected to the rod, s toothed bar or pawl connected to the opposite end of the mediallypivoted lever, a paper-cylinder mounted in suitable bearings, a ratchet-.wheel mounted on theaxis of the paper-cylinder, and adapted through the described connectionto move the lpaper-cylinder a. certain distance upon each depression of n key, a series of type, and means for bringing the proper type to printing position and in'to engagement with the paper-cylinder upon each depression of n ke) In testimony whereof I aix my signature in presence of two witnesses.

JAMES MALLMANN.

Witnesses:

' RTHUB L. Moment.,

'Arms V. FAUs'r. 

